The Unicode LINE SEPARATOR character (U+2028) is defined to break lines
without breaking the "paragraph". For the most part in CSS it is
equivalent to a newline; however for the BIDI algorithm, the difference
between a line break and a paragraph break is significant. The text in
CSS2.1 needs to be clarified to say that LS does not break the bidi
"paragraph".
Suggested change:
# inline boxes uninterrupted by a forced line break or block boundary
to
| inline boxes uninterrupted by a forced (bidi class B)
| break or block boundary
where "bidi class B" is linked to
http://www.unicode.org/reports/tr9/#Bidirectional_Character_Types
~fantasai